| Mesosphere-Stratosphere-Troposphere | Academic & Science |
| Master of Studies | Academic & Science |
| St. Cloud State University, St. Cloud, Minnesota, library code | Academic & Science |
| Mean Solar Time | Academic & Science |
| สมาคมมาตรวิทยาแห่งประเทศไทย | Academic & Science |
| Metrology Society of Thailand | Academic & Science |
| Marketable Securities Tax | Accounts and Finance |
| Maastricht | Airport Code |
| Mean Service Time | Business |
| Mercantile Stores, Inc. (de-listed) | Business |
| Multi-Strike Tungsten | Business |
| Management Skills Training | Business |
| Massif Software Technologies | Business |
| Mid-States (de-listed) | Business |
| Minimal Standard Terminology | Business |
| Miertus Scrocco Tomasi | Chemistry |
| MidSummer Time | Community |
| Mental Skills Training | Community |
| Monterey-Salinas Transit | Community |
| Maximum Service Telecaster | Community |
| Mystery Science Theatre | Community |
| Music Services Template | Community |
| Mandatory Skills Training | Community |
| Melbourne School of Theology | Community |
| Mathematics Support Teacher | Community |
| MESSAGE TYPE field | Computer and Networking |
| Microcomputer Systems and Tools | Computer Hardware |
| Micro-sensor Technology | Computer Hardware |
| Multi-system Test | Computer Hardware |
| Motor Switch Terminal | Computer Hardware |
| Meta System Transition | Computing |
| Max Speed Technology | Computing |
| Mears Silicon Technology | Computing |
| Molecule Stabilizing Technology | Computing |
| Math Science and Technology | Computing |
| Mid SAPs Technology | Computing |
| Microsoft Transform | Computing |
| Multi Stream Technology | Computing |
| Mini Specification File | Computing |
| Matrix Storage Technology | Computing |
| Mechanics Support Team | Computing |
| Multiple Spanning Tree | Computing |
| Multimedia Systems Technician | Computing |
| Microsoft Test | Computing |
| Microsoft Teams | Computing |
| Micro Systems Technologies | Computing |
| Manchester School of Technology | Computing |
| Mecklenburg-strelitz | Country Specific |
| Monster | Cryptocurrency |
| Idle Mystic | Cryptocurrency |
| MustangCoin | Cryptocurrency |
| Modal Survey Test | Earth Science |
| Master of Science In Taxation | Educational Degree |
| Master of Science In Teaching | Educational Degree |
| Microsecond Trip | Electronics |
| Micro Systems Technology | Electronics |
| Micro System Technology | Electronics |
| Monolithic Systems Technology | Electronics |
| Magneto-strictive Transducer | Electronics |
| Microsoft Test Document | File Type |
| Prosa Minispecification File | File Type |
| Microsoft Windows Sdk Setup Script | File Type |
| Mean Swell Time | General |
| Mystical Space Typhoon | General |
| Minimum Spanning Trees | General |
| Maintenance Support Tool | General |
| Medium Sized Telescope | General |
| Mean Solution Time | General |
| Movimento Sem Terra | General |
| Mnemonic Similarity Task | General |
| Malnutrition Screening Tool | General |
| Moving Strip Technique | General |
| Medium Survival Time | General |
| Mobx State Tree | General |
| Mercury Script Temaplate | General |
| Michael Scott Tasner | General |
| Mountains to Sea Trail | General |
| Mountains Streams and Trails | General |
| Multi Surface Tool | General |
| Microbial Source Tracking | General |
| Mitteldeutsche STudien | General |
| Machine Shock Test | General |
| Measurement Science and Technology | General |
| Mazda Sales Thailand | General |
| Major Structural Test | General |
| Manifold Surface Temperature | General |
| Mobile Service Team | General |
| Minimum Start Temperature | General |
| Measurement and Control Unit | General |
| Manifold Stud | General |
| Mopar Scan Tool | General |
| Motor Sport Technik | General |
| Mid Southern Toyota | General |
| Matt S Trout | General |
| Medallions Stones Trials | General |
| Mason Sier Turnbull | General |
| Modern Safety Techniques | General |
| Medallions Stones and Trials | General |
| Madison Symmetric Torus | General |
| Mobile Sales Tool | General |
| Multi Stream Transport | General |
| Micro Sensor Technologie | General |
| Magnetic Secure Transmission | General |
| Military Shipping Tag | Governmental |
| Mobile Strike Team | Governmental |
| Mutual Security Treaty | Governmental |
| Movimento Sem Terra (The Movement of the Landless) | Governmental |
| MASIT | Indian Railway Station |
| Mathematics Science and Technology | Maths |
| Mathematics Science Technology | Maths |
| Minimum Spanning Tree | Maths |
| Maximum Slope Tangent | Maths |
| Morphine Sulphate Tablet | Medical |
| Minimum Survival Temperature | Medical |
| Morphine Sulphate Tablets | Medical |
| Major Sexual Tension | Medical |
| Multi-mode Storage Tube | Medical |
| Median Survival Time | Medical |
| Medial Superior Temporal | Medical |
| Multi Systemic Therapy | Medical |
| Medical Surgery Technologies | Medical |
| Military Science Training | Military and Defence |
| Military Sexual Trauma | Military and Defence |
| Mef (marine Expeditionary Force) Weather Support Team | Military and Defence |
| Meteorological and Oceanographic Support Team | Military and Defence |
| Multipurpose Shuttle Tanker | Military and Defence |
| Maintenance Support Team | Military and Defence |
| Memotron Storage Tube | Physics Related |
| Modular Spectroscopy Technology | Physics Related |
| Maastricht Aachen Airport, Maastricht, Netherlands | Regional |
| Mission Support Team | Space Science |
| Mercury System Test | Space Science |
| Missile System Test | Space Science |
| Measurement Status Table | Space Science |
| Mission Sequence Test | Space Science |
| Mobile Service Tower | Space Science |
| Module Service Tool | Space Science |
| Module Systems Trainer | Space Science |
| Mountain Standard Time | Space Science |
| Majestic Sports Turf | Sports |
| Marine Specialised Technology | Technology |
| Mobile Sanitizing Technology | Technology |
| Math Science Technology | Technology |
| Mountain Standard Time [utc - 0700] | Time |
| Moscow Standard Time | Time |
